[kernel] generic-2.6: revert yaffs changes [11378], the new code is not working correctly on RouterBoards

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11427 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/generic-2.6/files-2.6.26/fs/yaffs2/Kconfig

@@ -43,8 +43,7 @@ config YAFFS_9BYTE_TAGS
 	  format that you need to continue to support.  New data written
 	  also uses the older-style format.  Note: Use of this option
 	  generally requires that MTD's oob layout be adjusted to use the
-	  older-style format.  See notes on tags formats and MTD versions
-	  in yaffs_mtdif1.c.
+	  older-style format.  See notes on tags formats and MTD versions.
 
 	  If unsure, say N.
 
@@ -110,6 +109,26 @@ config YAFFS_DISABLE_LAZY_LOAD
 
 	  If unsure, say N.
 
+config YAFFS_CHECKPOINT_RESERVED_BLOCKS
+	int "Reserved blocks for checkpointing"
+	depends on YAFFS_YAFFS2
+	default 10
+	help
+          Give the number of Blocks to reserve for checkpointing.
+	  Checkpointing saves the state at unmount so that mounting is
+	  much faster as a scan of all the flash to regenerate this state
+	  is not needed.  These Blocks are reserved per partition, so if
+	  you have very small partitions the default (10) may be a mess
+	  for you.  You can set this value to 0, but that does not mean
+	  checkpointing is disabled at all. There only won't be any
+	  specially reserved blocks for checkpointing, so if there is
+	  enough free space on the filesystem, it will be used for
+	  checkpointing.
+
+	  If unsure, leave at default (10), but don't wonder if there are
+	  always 2MB used on your large page device partition (10 x 2k
+	  pagesize). When using small partitions or when being very small
+	  on space, you probably want to set this to zero.
 
 config YAFFS_DISABLE_WIDE_TNODES
 	bool "Turn off wide tnodes"